## MeowLover17 one year ago The label on the car's antifreeze container claims to protect the car between −40°C and 125°C. To convert Celsius temperature to Fahrenheit temperature, the formula is C = 5 over 9 (F − 32). Write and solve the inequality to determine the Fahrenheit temperature range at which this antifreeze protects the car. CHECK MY ANSWER???

1. MeowLover17

−40 < 5 over 9 (F − 32) < 125; −40 < F < 257

2. MeowLover17

−40 > 5 over 9 (F − 32) > 125; −40 > F > 257 −40 < 5 over 9 (F − 32) < 125; −40 < F < 257 −40 < 5 over 9 (F − 32); −40 < F 5 over 9 (F − 32) < 125; F < 257

3. MeowLover17

@campbell_st

4. MeowLover17

Am i correct?

5. campbell_st

It makes some sense... but its not ideal I'd say you need to convert and get the temps lower $-40 = \frac{5}{9} (F - 32)~~~so~~~~F = \frac{-40 \times 9}{5} + 32$ same for 125 upper $125 = \frac{5}{9}(F - 32)~~~or~~~~ F = \frac{125 \times 9}{5}+ 32$ then the inequality is lower < temp < upper

6. MeowLover17

So what would my answer be?

7. MeowLover17

http://gyazo.com/72bcd794b3821cbc49db6bcf40eef15a Because for this one i got it right using the same type of setup.

8. MeowLover17

Hi could you help me?

9. MeowLover17

@pooja195 @welshfella

10. campbell_st

well if you do the calculations for the temps in Fahrenheit the the antifreeze temp will be between your 2 calculations.

11. MeowLover17

I got it right, i'll medal and fan you since you responded :D thanks.